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BB4072 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The BUMPER is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC, overall_height: 0.375 INCHES NOMINAL IN, groove_diameter: 0.188 INCHES NOMINAL IN, style_designator: DOUBLE FLANGE, top_flange_width: 0.188 INCHES NOMINAL IN, bottom_flange_width: 0.125 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-425-1924, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
BB4072
NSN: 5340-00-425-1924
FSC: 5340
CAGE: 76348 — MILLER PRODUCTS CO INC (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC
overall_height0.375 INCHES NOMINAL IN
groove_diameter0.188 INCHES NOMINAL IN
style_designatorDOUBLE FLANGE
top_flange_width0.188 INCHES NOMINAL IN
bottom_flange_width0.125 INCHES NOMINAL IN
bottom_flange_diameter0.250 INCHES NOMINAL IN
material_hardness_rating55.0 DUROMETER MINIMUM AND 65.0 DUROMETER MAXIMUM
outside/top_flange_diameter0.500 INCHES NOMINAL IN
NSN5340-00-425-1924
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: BB4072 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL HARDNESS RATING: 55.0 DUROMETER MINIMUM AND 65.0 DUROMETER MAXIMUM
•
GROOVE DIAMETER: 0.188 INCHES NOMINAL IN
•
BOTTOM FLANGE DIAMETER: 0.250 INCHES NOMINAL IN
•
TOP FLANGE WIDTH: 0.188 INCHES NOMINAL IN
•
STYLE DESIGNATOR: DOUBLE FLANGE
•
BOTTOM FLANGE WIDTH: 0.125 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL HARDNESS RATING55.0 DUROMETER MINIMUM AND 65.0 DUROMETER MAXIMUM
GROOVE DIAMETER0.188 INCHES NOMINAL IN
OVERALL HEIGHT0.375 INCHES NOMINAL IN
BOTTOM FLANGE DIAMETER0.250 INCHES NOMINAL IN
TOP FLANGE WIDTH0.188 INCHES NOMINAL IN
STYLE DESIGNATORDOUBLE FLANGE
BOTTOM FLANGE WIDTH0.125 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC
OUTSIDE/TOP FLANGE DIAMETER0.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
47272Interchangeable
interchangeable cross-reference
interchangeable
GGG-C-406 TY3CLAInterchangeable
interchangeable cross-reference
interchangeable
4072Interchangeable
interchangeable cross-reference
interchangeable
O-C-265Interchangeable
interchangeable cross-reference
interchangeable
MIL-STD-1218Interchangeable
interchangeable cross-reference
interchangeable
C64-500Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BB4072?
BB4072 is a BUMPER.
What parts can replace BB4072?
There are 14 known substitutes for BB4072: 47272, GGG-C-406 TY3CLA, 4072 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BB4072?
BB4072 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-425-1924. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026